The Sushi Problem/The Highlight Zone Problem. The Sushi Problem Peg and Cat help Aki pursue a tricky thief through the Japanese countryside, making use of their Ninja skills and three mysterious clues. Primary Learning Goal: Increasing and decreasing height and length Secondary Learning Goal: Deductive reasoning (using clues) / The Highlight Zone Problem Peg and Cat find their world turned black and white! They must identify ten things that are the wrong size or shape, before they will be allowed to leave…the Highlight Zone. Primary Learning Goal: Shape and size Secondary Learning Goal: Comparing